Coffee maker



NOV. 24, 1931. R, A BUCKNER 1,833,823

COFFEE MAKER Filed Dec. l2. 1950 attenua* Patented Nov. 24, 1931 A. miexaimn, or mIsseUn term This inven'tm relates i-n general te coffee makers, and more pa-rtlieulairly hns reference to astru-cture erming-jen improvement ever that jdescribedi 'inrniy PetentVNo. 899;@99,

i, dated September 2; 1908.-A

' my coee Lina-ker ldeseriled inthe aloev'e mentioned patent there have Adevele'ped l:i number 'of diffi'cu-lti'es.1 The firstj 'off-these diffieuilties is due tothe feetltliet 'this stru@ 10 ture was made ,up of a plurality efpertssol'- dered or :otherwise fsten'ed-ftogetlfie-r. V By Virtue of the nia-nner in Wlrich -i-t was forrned, there were left, 'especially ,around the ,junc-` ture between vthe bottom ,and tlieslopingsides `Mi oi? the coffee 4nnalzer,deep Corners or -erevifce which .tended to fcolleet'the 4'gum trointheceffeeyand -i-n jtinie tofcre'frte -a 'Very unsanitfairy` condition Within 'the Vcoffee maker. *This has been so lpronounced that -a'ter asho'rt `period 20 of useit 'has beconie `necessavry "-,to thoroughly eleansethe -coieeemak'er by-means-ot-senie very strong cleansing `agent to reinovethe-c'olleeted gum or to yentirely 'diseardthe Acoffee mai-ker and secure a new one. Th'e sharp 'torners en the exterior off `"the ibottomof this dey-'ite Asi-lso prohibited lits being placed, Jreither {temporerily or dtherwise, Lu-pon any surface which might easily be marred.

Another d'rfiicu'lty whi'eh has 'arisen lin Connection with this feature is Jthe frequency with wh'ich lthe soldered joints liave'melted apart fand necessitated 'repairs or replacements. The 'inconvenience eind ineiiieiengcy resulting from this .difficulty have formed maker as for-inenly disclosed. y Y

Another difficulty wh' ch Ahas yarisen ,in connection Awith :ni-y ormercofee maker has been that encountered fin lting therceffee makerV for the punpose of invertingit into the eoie'e vpoit (mother receiving-vessel. In utiliz'ing the vent pipe feria lhan'dle asf-suggested in my lpatenlt, it ibas be'en necessary to use cloths -or some form of insulating ho'lder 2in order Lto prevent 'bunringofthelhfends iDue to v-tlie ydifficulty of grasping Lthe vent kpipe with such en insulating holder, frequent ace cidents have Joccurred 'resul-ting in more .or less serious burns te hen/ds or other-pants serious menace to the 1util`ityo`f 'the :Coffee `hits entirely rbeen ip'u-llfed out from jle'etween' tlie v`neck for top yoff the ceee rnsilk'er andthe Y ringl Wlii'eli"Wasfedepte'd toflemp the jsaiirreflili position. i f 1Diliiculty has also been experienced in conn'ee'tion with Vthe il'ainge on'tihlisy ring which Was adapted te suppert the maker in its inverted position. The feoifee would te Y at times vSleat-lz er seep jtlife'iigli'fthe {ffillte'r Cloth between the 4:ring ein-d the neck of the eofli'ee inn-ker" and Cel-lect on top oi the nutweifdilly extending flange( When the 'coffee maker was then removed, from the top of there-l Cei-ving `vessel and irestored to its' upright positiontliis Coiee Wlii-eh li-as' "so "seered through would .run down rthe sides'foff Vtie coffeemaker and vdrip upon the tebleerother support. ,"This was "not only itrue fof 4,the coifee yvliili seep ed tlifroufgh between fthering and the neck of the eoifeev fmfxlker ibut in eddil tion Coffee frein vthe outer surface ef the filter cloth Would run down the outsidefef the rin -sind drip "over the outer ed'gefof the outWa-r' -l-y ektlefdinj'g tlimge ente fthe ijsleaping sides of tliej'cotfee' lim-ker or on table One other diiiiculty which Was experienced l-a-y in the fact "that during thejptocess foil? draining the coffeel from the co ee rnke Vinte the receiving vessel fa certa-in ernennt off fste'aingwould' pass finte the yen-t lpipe and become endensedtherein. "This condensate would tlien run down inside the .Vent :pipe until it reeLdlied--'tli'efopen end, et which rpoint 95 it would ld'rip Au-'po'n :tlieoutside s of :the ire'- ceiving Wessel oriugponfthe table or :other Isupportfuponmhichitliefafppiaratus rested.

An '.fobject o the present ,inventfil ii-s overcome `theeloove vendfother diillltes 'in m0 stig.

connection'with my former patented device and the prior art.V

Another object of this invention is, to form a coffee maker retaining all the advantages of my prior device while eliminating the disadvantages of the same.

Yet another object of this invention isfto form a coffee makervof one piece of metal Vhaving rounded corners which will not becomeA filled with gum' or other refuse and a smooth flatbottom which will not'marany surface upon which it might be placed.

Yet another objectV of my invention is to- :cloth to the neck of the coffee maker, but

whichvwill in vaddition positively support said filter. cloth at substantially all points thereof uponwhich stress is to be placed. kAnother object'of this invention is to provide avent pipe similar tothat utilized, in

my former device and to so shape said vent Y Vpipe that it will conduct any` condensate formingthereininto thetop of4 the vessel (which is to receive the finished coffee.

VYet another object of this invention is to provide an insulating section u onl the vent pipe so that the vent pipe may e more readily used in a handle for the coffee maker without danger Vof burning the hands.

Withthe above and other objects in vv iew my invention consists essentially of a coffee maker .as described in the followingspecification and as disclosed in the accompanying drawings. Y .j Y Y Y Inorder to insure an adequate comprehension of my inventionand to make certain that thefsame may be fully understood, have illustrated'one embodiment-thereof in the accompanying drawings in which:

Figure 1 is a perspective view of my improved coffee maker resting in itsinverted position upon Ythe top of a coffee receiving urn.VV Y l ,Figure 2 is a View in section of the coffee maker shown in Figure 1 with a portion of the coffee urn omitted therefrom.

Figure 3 is a view of my coffee maker i1- lustrating a modified form of the vent pipe shown in Figure 2. V

Figure 4 is a sectional view of a modified vform of retaining ring for my.v filter cloth,

illustrated in place upon thev neck of the coffee maker.v Y

` Figure 5is a perspective view of the form of retaining ringillustrated in Figure 4.

.Referring now more specifically to the drawings, and particularly to Figure 1 thereof, there is shown arcoffee maker 1 of my im'- proved form in its inverted position upon the top-of the coffee receiving urn 2. This receiving urn is illustrated asV having the conventional spout 3 and the handle 4. lThis urn is provided with an upstanding rim 5V Within which there is formed a circumferentially extending shoulder 6. Thisl shoulder 6 is adapted to perform the dual function of supportingtthe caporcover for the coffee .Y

urn during the time when coffeev is not being made and of supporting the coffee maker during the time in which coffee is being made.

lThe coffee maker 1 whichhas been illustrated more clearly in Figure 2 is shown as having a flat bottom 10, with ashort cylindrical section 11 joined immediately thereto. This cylindrical section 11 merges into a Y truncated conical section 12 whichV extends nearly to the top of the coffee maker.A This section 12 then merges into a, second and smaller cylindricalsection 18,v whichat its Communicating with `the. interiorrof theY coffeemaker through this opening thereis joined tothe Walls of h Coffee maker a vent y pipe 15 in theinannerillustrated.inr Figure 2. f -;This pipe 15 is bent upwardly as at 17 so that it extends along the side of t-he truncated conical section 12 in substantially-parallel relation thereto. This pipe is terminated at a point 18, adjacent the top of the coffee n maker. l A bracingor kbracket member 19 isl provided as shown in Figures 1, 2 and 3 at a point intermediate the endsof the pipe 15 andL rigidly connectsfthey same to the wall 12 of the truncated conical portion ofy thev coffee maker. VFor a considerable portion of its length this pipe 15 is encased in an insulating material 2O suitable for a handle in order to enable the pipe to be used in handling the coffee maker and inverting the same into the top of the-urn 2. This insulating material may' be of any of the many well known and suitable compositions now in use.

In Figure 3 there is shown -a modification of the vent pipe'asat 15. In this modification the vent pipe is joined as above described to the main body of lthe coffee maker as at 16 andis bent upwardlyat 17 It is likewise provided with a'handle portion 'of insulating material 20 and witha supporting bracket 19. However, the free end of this pipe is'bent inwardly toward the neck of the coee'maker as at 17"v sothat the open end of the pipe is locatedfat'18. By virtue of this disposition of the end ofthe-pipe 15 any condensate or other liquid escaping therefrom maybe deposited directlywithin the topflange 5 of thereceiving coffee urn 2:. i

ceases In Figures 1 to 4 there is illustrated a filter cloth 2l which is stretched over the open end of the cylindrical portionl of the coffee maker 1. Over the top of this filter cloth there is then placed a retaining ring 22 of cylindrical form for the purpose of clamping the cloth firmly against the bead 14 which has been described as being form-ed on the open end of the cylindrical part 13.

This ring 22 is formed with an inwardly turned fiange 23 which bears directly against the filter cloth and serves to prevent the ring from being forced too far on to the neck or cylindrical part 13 of the coffee maker. At the other edge of the ring there is provided an outwardly extending flangeA 24 the outer edge of which is rolled toward the body of the ring and away from the body of the coffee maker to form a bead 25. As will be noted from the various figures of the drawings this bead 25 in connection with the main part of the ring 22 forms a circumferential channel of small extent as shown at 26. This channel serves to catch any liquid which may run over the outer part of the ring when the coffee maker is restored to its uprightposition after having been inverted. It is also noted that the flange 24 is small enough in extent to t entirely within the rim 5 of the urn and rest upon the shoulder 6. v

In Figures 4 and 5 there is illustrated a modified form of retaining 'ring 22 in which the flange 23 is omitted and in which an end portion 27 is formed extending over the entire open end of the coffee maker for the purpose of positively preventing the filter cloth from being bulged or forced outwardly by the weight of the coffee thereon.` lThis end portion 27 is formed with perforations 28 for` the purpose of allowing the coffee to filter through the filter cloth and be deposited in the coffee urn. This modified ring 22 is formed withan outwardly extending flange 24 rolled as at 25 to lform a channel 26 in substantially the same manner as was illustrated and described in connection withthe form shown in Figure 2.

In view of the foregoing detailed description the operation of my invention will be at once apparent to a person skilled in the art. The coffee is first placed within the coffee maker 1 and a suitable amount of boiling water is added thereto after which it is allowed to simmer for a short-time. The filter cloth 21 is then placed over the top of the coffee maker and is clamped thereon by means of either the retaining ring 22 or the ring 22. The coffee maker is then inverted, by means of the handle portion A20, into the top of the urn 2 as illustrated in Figures l, 2, and 3. After allowing the coffee sufficient time in which to filter through the filter cloth and be deposited into the urn 2, the coffee maker is removed from the top of the coffee urn in a manner similar to that in which it was placed thereon. In removing ithefcoffee maker lit gis noted that ,any lli-quid which might run "from the wet surface -ofithe filterfcl'oth down the outside of the retaining ring would be 'caught within the circumferential channel 26 formed by the bead 25. It is further .noted that dur- 'l ing the-time which the :coffee maker remains .the outwardly extending shoulder 24.y Since, y

h owever,this shoulder1 24 rdoes not `have v`any obstnuct-ionat its-outer edge which would prevent such liquid from flowing off, lthe liquifd would immediately flow` over the louter edge ofthe flange ,24 la-ndrbe deposited within the rim 5 ofthe coee urn upon the shoulder 6. When the coffee maker is then removed from the top ofthe :urn this liquid would be allowed to flow directly into the urn. During -the time ywliichthe coffeemaker remains .invented infto the Itop of Vthe urn any condensate which may` be formed within the vent pipel, if thisform is used, will -be conducted by the pipe as shown inFigure v3 directly lintoth'e top of the `urn and be deposited between the edge of the'shoulder andthe :rim 5 upon `the shoulder 6.

. lrfrom the foregoing it will be nappreciated that I have provided .a coffee makerv which retains the advantageof the sloping wall of my former coffee maker, while at the same vtime affording by virtue of its construction,

a larger capacity. By making, this coffee.'

maker in one piece'Ihave also eliminated .the

possi-bility of soldered joints becoming loose and have eliminated deep corners and crev-ices which formely served to collect coffee gum and otherrefuse and to render the condition of the-coffee maker unsanitaryafter a short period of use. n l

It will further be appreciated that I have provided a means whereby `the vent pipe illustrate'd'in connection with -my former coffee maker 'may be used-as a handle without danger 'of burning the hands.

It will further 'be apreciated that I `have provided 4a novel form o-f vent pipe in which any condensatie 'collecting "thereinwill be deposited within the receiving vessel and will n'o't'be 'allowed'to drip upon the table or other support.

It will be seen moreover that I'have vprovided upon the outer portion of the neck of my improved coffee maker a means whereby the filter 'cloth may be more firmly clamped to the neck and more firmly retainedin its clamped position.

I have also provided a retaining ring for clamping said filter cloth in its operative position, and have formed uponthis ring an outwardly extending shoulder which willr fit within the rim of the urn to support the coffee maker, and which will serveto prevent any liquid from being allowed to run down theV face of the coffee lmaker when it is restored toV its upright position. Y l

`It will be noted also that I have provided a modified form ofa clamping ring which has a portion extending over the operative surface of theiilter Cloth to prevent' the same from being bulged outwardly by the Weight ot the materials within the coffee maker.V

'While I have illustrated and describedv certain embodiments ofmy invention, I wish itto'be clearly understood that these forms Y vare by way of illustrationonly and are not to 'be construed as in any way limiting my invention.V It is understoodtliat the scope of this invention isY to be limited only by the prior art andby the terms of the appended claim.' i

I claim:` 1 Y Y Y A coiiee maker comprising, in combinat tion, an urn for receiving the finished beverage, a circular shoulder formed inside the rim of the urnfa receptacle formed as a truncated cone merged at its top and bottom into integral cylindrical parts adapted to be in- Y verted with its mouth within the 'top of said urn and supported on said shoulder, a iiltei iitting over the mouth of said receptacle, a

Cylindrical member'tightly fitting about the` mouth of said receptacle and clamping the ilter in place, the edge of said eylindriealmember nearest the body of 1Lhe receptacle being bent Voutvrlardly to form aradially extending flange and said flange having a small portion ofits outer edge rolled back upon itself` in a direction away 'from thev body of the re- V ceptacle, Vthe -linished flange being of such eX- tent asito lit within the top of the urn and rest upon the circular shoulder and having shallow channel on the side remote from the body of the receptacle, a pipe Communicating withthe interior of said receptacle Vnearfits bottom to vent liquid in said receptacle when inverted, said pipe extending upwardlyv along the outside wall of said receptacle in spaced relation thereto to a point near the top of the receptacle,othe upper end of said pipe be- `ing bent inwardly to allow any condensate forming, to loe deposited within the mouth of the urn and insulating means surrounding l a portion of the pipe to afford protection i fas when using the pipel as a handle.r

In testimony whereoi:l I ailix my signature.

ROYLE A. BUCKNER. 

